What are the weep holes in sliding door frame?

Author: Dejon Torphy DDS  |  Last update: Friday, March 27, 2026

The weep holes can be seen from the exterior of the unit, at the bottom of the sill. After the water passes through the sill itself, it drains out through the weep holes.

What are the drainage holes in sliding doors?

On either end of your sliding door's track will be a series of small holes bored into the frame. These are known as Weep Holes and are designed to help drain water from the track and stop it from building up.

What happens if you block weep holes?

Blocking your window weep holes predisposes the window structure to water damage, rust, and corrosion ultimately reducing your window's lifespan.

What are the two holes at the bottom of a sliding glass door for?

Every standard sliding glass door has adjustable rollers that help it slide back and forth within the track. On the bottom portion of your sliding glass door, you should see a small hole on each side of the door. These holes hide the adjustment screw for the coordinating rollers.

Why does my sliding door track fill with water when it rains?

It is normal, especially in the case of heavy rain. Since the outer side of the track is exposed to the elements, water from a storm is naturally going to make its way in there.

How Window Weep Holes Work | Anlin Windows & Doors

How can I keep rain water out of my sliding door track?

Sliding door track covers and sliding door track shields offer a great solution. They keep water and debris out.

Why is my sliding door frame leaking water?

Leaks often stem from the door track but can come from several locations. A dirty or broken track can break the seal between the frame and the door. Check your rollers, flashing, and weep holes for repairs. Your glass can become unsealed over time.

What are the 2 screws for on the bottom of the sliding door?

Locate the screws: At the bottom of the patio door frame, you should find two screws on both the front and back of the sliding door. The top screw holds the wheels in place, while the bottom screw controls the door's height.

How to clean weep holes in patio doors?

To clean the weep (drainage) system, check to make sure that the weep holes are clear of obstruction (dirt, sand or building materials). To clean the weep holes, use a small, soft brush to clear the opening. Weep holes may be located both inside and outside the window in the bottom of the frame.

How do you get moisture out of a double pane sliding door?

You can couple a ventilating fan with a dehumidifier for maximum effects in reducing humidity and thus the moisture trapped on the door's glass surface.

Should I fill weep holes?

Don't fill your weep holes.

What do weep holes look like?

Weep holes in brick look more like places where the brick mortar appears to be missing in between two bricks. The vertical line of mortar will strategically not be there where two bricks meet. The mortar is not missing, it's not there on purpose and leaves an opening in the wall structure.

Can water seep through weep holes?

This research demonstrated that even under truly extraordinary conditions water rarely enters the weephole and even if it does it cannot be blown high enough up in the cavity to create internal damp problems. To understand why, it's important to look at the details of a correctly constructed cavity wall.

Why is my sliding door leaking air at the bottom?

If your sliding glass door is drafty at the bottom, installing a door sweep can make a big difference. Step 1: Measure the width of the door to ensure you purchase the correct size sweep. Step 2: Attach the sweep to the bottom of the door, following the manufacturer's instructions.

Why is there condensation on my sliding door frame?

If the air inside your home contains excess moisture, this can cause condensation to appear on your sliding door panes. Investing in a dehumidifier can help get the balance of moisture in your air just right and reduce condensation.

Why do sliding doors have weep holes?

Weep holes are a feature on Milgard sliding doors that help ensure the water runs out of the door track properly. Cleaning the weep holes on a vinyl sliding patio door is very easy to do and takes about 5 minutes. This cleaning process is highly recommended to keep your weep holes free of dirt and debris.

How do you know if a weep hole is clogged?

ANSWER - Having wet grout around the drain does suggest that the weep holes at the waterproof membrane level might be plugged.

What happens if you seal weep holes?

If the weep holes are blocked to prevent drainage from occurring, the water can build up in the extrusion and ultimately leak into the wall cavity if a leakage path is available.

Why is my sliding patio door not closing properly?

Difficulty in opening or closing: If your sliding door is hard to open or close, it could be due to dirt and debris in the track or issues with the rollers. This can make everyday use frustrating and inconvenient. Misalignment: Over time, the door can become misaligned due to settling of the house or frequent use.

What is on the bottom of a sliding door?

Sill – The main horizontal member forming the bottom of the sliding door frame.

How to clean sliding door weep holes?

Use a pipe cleaner or small brush to clean any dirt or debris out of the weep hole.

Should you caulk the bottom of a sliding glass door?

Using caulk and silicone sealants can greatly enhance your door's sealing effectiveness. Here are some benefits: Lower Energy Bills: Sealing gaps helps maintain temperature, reducing heating and cooling costs. Comfort: A well-sealed door keeps your home warmer in winter and cooler in summer.

Why is the bottom of my door frame leaking water?

A very common cause of water leaking through your door is if the frame has become rotted or warped. Rotting is especially common in wood doors, and warping is more common for vinyl doors due to their reaction to changing temperatures.

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